Bunsen burner.



/ No; 860,494. Y PATENTED JULY 16, 1907.

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BUNSBN BURNER. AJPPLIOATIOI FILED SEPT. 26, 1906.

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FIG. 3

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I UNITED STATES PATENT oEEroE.

KLCORN RECTOR, OF NEW YORK, N. Y., ASSIGNOR TO REOTOR GAS LAMP COMPANY,OF NEW YORK, N. Y., A CORPORATION OF CONNECTICUT.

BUNSEN BURNER.

N 0. 860,494. Specification of Letters Patent. Patented July 16, 1907.

Application filed September 26,1906. Serial No. 336,276.

To all whom it may concern: my invention; Fig. 2 is a side elevation,but taken at Be it known that I, ALCORN R nc'ron, of the city, rightangles to the view shown at Fig, 1; Fig. 3 is an 55 county, and State ofNew York, have invented a new enlarged vertical section of the burner;Fig. 4 is a cross and Improved Bunsen Burner, of which the followingsection on the line 14 of Fig. 3; and Fig. 5 is a cross 5 is a lull,clear, and exact description. section on the line 55 of Fig. 3.

My invention relates to improvements in Bunsen The burner has the usualbase or nipple portion burners, and especially that sort of burner whichis which is adapted to screw to the service gas pipe, and it adapted tobe used to heat the mantle of an incandeshas a reduced upper end 11 andalso gas openings 12 I cent gas lamp, although it can be used in anyplace grouped around the needle valve 13 which extends 10 where it isrequired to get intense heat out of a mixture upward about the top ofthe nipple and which is preferof gas and air. ably integral therewith.The nipple or base has the The di'fliculty with most Bunsen burners isthat they usual large bore so that an adequate supply of gas can arehard to regulate, and it requires considerable adalways reach theoutlets l2. justnlent to get the proper quantity of gas with relationThe needle valve 13 is adapted to enter the hole 15 to the influx ofair. 14 in the cap 15 which is internally screw threaded Anotherdifficulty is that it is hard to get all the air so as to [it thethreaded part ll of the nipple l0, and for that is required at thedesired point, and it it were posconvenience the cap 15 has a milledllange 1.6 by which sible to support the chimney portion of the Bunsenit can be turned, and the base or nipple it) has also a tube at theright distance above the needle valve or milled flange. 17 for the samereason. The burner tube 20 gas inlet Without having any surroundingmaterial so 18 has its lower portion 19 very much enlarged up to thatthe air could flow freely into the chimney part the point 20 which. isjust above the highest air intake and mix with the gas such a burnerwould be very and here the tube bends sharply inward and mergesefiicient, but the chimney or mixer portion must be into the mixer orchimney part 21. The large part. 19 supported. of the tube screws to thenipple 10 although it can be 25 To attain this result as nearly aspossible, I produce otherwise fastened, and this portion of the tube isof a skeleton Bunsen tube ill which the flow of air to the skeletonformation, being cut away as much as possible mixer or chimney isunhindered practically, and by to permit the greatest inflow of air. Theopenings 22 so doing I also attain another very important result, thusappear on opposite sides of the tube as shown in to wit, I leave the capof the needle valve exposed so the several figures, and the upper wallof each opening 30 that it can" be gripped by the fingers and readilyad- 22 is extended downward and inward as shown at 23, justed to get theright [low of gas. Where the milled and these friction lingers or brakes23 press against the part of the adjustingcap is left exposed it maymove cap 15 so as to prevent the latter from being accidentally toofreely so that a person in dusting the lamp, for inturned. Obviouslythis braking device can be applied stance, might accidentally turn thecap and disarrange in any other convenient Way and can be extended in-35 the burner, as is the casein usual needle valve burners, ward fromany part 01' the tube or adjacent structure and to obviate this, Iproduce friction attachments so as to frictionally engage the cap 15,and it will be unwhich are preferably a part of the Bunsen tube andderstood that the flange 16 is a part of the cap. In which by bearingagainst the cap prevent it from being addition to the openings 22 Iprovide openings 24 just too readily turned. below the bend 20 and abovethe openings 22, these 40 To still further improve the burner I make thelower openings 24 being also above the cap 15 and located portioncomparatively large and produce a sharp inat right angles to theopenings 22 so that the air will ward bend at a point a little above theair intake and flow inward to the tube from all sides. gas inlet so thatthe large quantity of inrushing air Referring specially to Figs. 1 and 2it will be seen together with the gas will be compressed through thethat by making these large openings 22 on the opposite 45 reduced upperportion of the mixer and will get suflisides of the Bunsen tube itexposes the flange 16 to such cientvelocity to be thrown well into themantle. All an extent that it can be conveniently gripped by the this tothe end that a highly efiicient and easily reguthumb and finger and canbe easily turned to regulate lated burner may be produced. the gas flow.So far as this rcgulable feature is con- Reference is to behad to theaccompanying drawings corned, it will be seen that it is not limited toany par- 50 forming a part of this specification, in which similarticular arrangement of the valve and that both this and figures ofreference indicate corresponding parts in all the braking attachment 23above described are applithe figures. cable to any burner having arotating part to regulate 100 Figure 1 is a side elevation of the burnerembodying the valve.

2. The combination with a burner having a rotary part to regulate thegas flow, of a mixing tube on the burner.

said tube having side openings therein, and spring; fingers 10 extendinginward from the Walls of the openings into engagement with the saidrotary part.

3. A burner, comprising a .base or nipple portion having a reduced andscrew threaded upper portion With gas openings therethrough, and aneedle valve thereon, a flanged cap secured to the reduced part of thenipple and having" a hole in the top to receive the needle valve, and amixing tube supported on the nipple and having openings in the side,said tube also'earrying friction fingers to engage the cap.

- ALCORN HECTOR.

Witnesses WARREN B. I'IUTCHINSON, FRANK L. STUBBS.

